0-HMXE2323 Heli-Max Spur Gear w/Shaft 230Si <p><font color="#00ff66" size="2" face="Arial, Helvetica, sans-serif">These are the Spur Gears with Shafts for the 230Si Quadcopter UAV from Heli-Max. Four aluminum shafts with preinstalled plastic spur gears included.</font></p>